"Functional morphology seeks to establish the relationship between form and function: the description of anatomic phenomena is used as a basis for defining functional factors which themselves, long term, affect the development of the form. This kind of basic study is essential for our understanding of quadruped and human motion and has been discussed by Pauwels (1948,1955, 1960) and Kummer (1956, 1959, 1962, 1978). Biomechanical analysis ..."